This document describes the features and characteristics of the Sony Corporation's D-NE720/NE720LS Atrac CD Walkman portable CD player produced in 2005, including the use of environmentally friendly ink and recycled paper for printing, fire and safety precautions, user instructions, and operation guide.
This manual explains how to operate the Sony D-NE720/NE720LS Walkman, covering safety precautions, battery handling, headphone connection, and basic playback functions. It also provides detailed instructions for creating ATRAC CDs with SonicStage software and using MP3 and CD‑Extra discs.
The guide includes a parts and controls overview, troubleshooting tips, maintenance advice, and technical specifications such as supported disc formats, bitrate limits, and storage capacities. This manual is written in Chinese.
| Maximum number of groups | 256 |
|---|---|
| Maximum number of files | 999 |
| ATRAC3 bitrate / sampling rate | 66/1057 kbps @ 44.1 kHz |
| ATRAC3plus bitrate / sampling rate | 48/64/256 kbps @ 44.1 kHz |
| MP3 (MPEG‑1 Layer 3) bitrate range | 32‑320 kbps |
| MP3 (MPEG‑2 Layer 3) bitrate range | 8‑160 kbps |
The player supports up to 256 groups and up to 999 individual files.
ATRAC3plus files can be encoded at 48, 64, or 256 kbps, all at a 44.1 kHz sampling rate.